There are many reviews on the Internet and bench mark results which shows this card being very bad in comparison to Intel or the previous Phenom II. In my experience I have found it to be faster and better than my previous Phenom II, I get more FPS in games for a start and seems to be all round slightly faster running programs and such.
This processor AMD have gone about creating a new architecture which only means they will only get better and better as they improve on it. These processors I believe have got bad rep from all the reviews but I think its slightly biased or done by Intel fanboys for bragging rights. This processor is nowhere near as bad as people are making it out to be and it worth the money.
The only thing I find slightly annoying is Intel fanboys always comparing benchmarks when in the real world for example an Intel CPU would only be .25 seconds quicker, if that. (I don't mind Intel at all its just the obnoxious people that buy Intel, which seems to be the majority when you look online)
Although you need a new socket on the motherboard for this AMD CPU. You won't need to buy another motherboard when or if you upgrade to furture AMD CPU's (AMD 8350 for example). Unlike Intel which needs a new motherboard with every CPU upgrade basically.
Runs perfectly well with the Asus Crosshair v Formula motherboard. Also a few reviews pointed out the standard CPU cooler isn't up to scratch, in my opinion I would get a new one (the cooler the better) but it isn't vital only get one if your overclocking. I don't want to get into great detail about the CPU and have a long boring review that nobody wants to read, so:
Its a good processor, overclocks well, runs rather cool and I think worth the price.